The adsorption of thiourea onto activated carbon as an alternate to cyanide in gold production


SELENGİL U. , Yidirim M. E.

FRESENIUS ENVIRONMENTAL BULLETIN, vol.17, no.3, pp.357-363, 2008 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 17 Issue: 3
  • Publication Date: 2008
  • Title of Journal : FRESENIUS ENVIRONMENTAL BULLETIN
  • Page Numbers: pp.357-363

Abstract

The applicability of thiourea adsorption onto activated carbon from industrial wastewaters, especially gold mining wastewaters was investigated. The prepared thiourea solutions were used in the experimental studies and the effects of time, initial thiourea concentration, amount and particle size of activated carbon and presence of FeSO4 in the medium on thiourea adsorption onto activated carbon were examined. Coconut carbon with a particle size distribution of 1-3 mm was used as adsorbent in the experiments. The Langmuir and Freundlich isotherm models were tested for their applicability.